A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 6150-01-608-3348
NSN 5920-01-491-9763
NSN 6685-01-433-3745
NSN 2925-00-315-8442
NSN 5999-01-498-5253
NSN 5935-00-198-4462
NSN 6130-00-969-0458
NSN 2925-00-964-7128
NSN 5835-01-395-7976
NSN 5925-00-252-1554
NSN 5965-01-463-6813
NSN 6220-00-006-5157